Service dog pen clip



FIG. 1 is a front, top, right side isometric perspective view of a service dog pen clip in accordance with my design;

FIG. 2 is a front elevation view thereof with a medal on the pen clip shown in a first position;

FIG. 3 is a front elevation view thereof with the medal moved to a second position;

FIG. 4 is a Rear Elevation view thereof;

FIG. 5 is a Left Side Elevation view thereof;

FIG. 6 is a Right Side Elevation view thereof;

FIG. 7 is a Top Plan view thereof; and,

FIG. 8 is a Bottom Plan view thereof.

The broken lines illustrate portions of the environment and of the pen clip which form no part of the claimed design. 

CLAIM The ornamental design for a service dog pen clip, as shown and described. 